Blar i Articles på forfatter "Knutsen, Tor"
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Standing stock of Antarctic krill (Euphausia superba Dana, 1850) (Euphausiacea) in the Southwest Atlantic sector of the Southern Ocean, 2018-19
Krafft, Bjørn Arne; Macaulay, Gavin; Skaret, Georg; Knutsen, Tor; Bergstad, Odd A; Lowther, Andrew; Huse, Geir; Fielding, Sophie; Trathan, Philip; Murphy, Eugene; Choi, Seok-Gwan; Chung, Sangdeok; Han, Inwoo; Lee, Kyounghoon; Zhao, Xianyong; Wang, Xinliang; Ying, Yiping; Yu, Xiaotao; Demianenko, Kostiantyn; Podhornyi, Viktor; Vishnyakova, Karina; Pshenichnov, Leonid; Chuklin, Andrii; Shyshman, Hanna; Cox, Martin J; Reid, Keith; Watters, George M; Reiss, Christian S; Hinke, Jefferson T; Arata, Javier; Godø, Olav R; Hoem, Nils (Peer reviewed; Journal article, 2021)Estimates of the distribution and density of Antarctic krill (Euphausia superba Dana, 1850) were derived from a large-scale survey conducted during the austral summer in the Southwest Atlantic sector of the Southern Ocean ... -
Structure and functioning of four North Atlantic ecosystems - A comparative study
Melle, Webjørn Raunsgård; Klevjer, Thor A.; Drinkwater, Kenneth F.; Strand, Espen; Naustvoll, Lars Johan; Wiebe, Peter H.; Aksnes, Dag Lorents; Knutsen, Tor; Sundby, Svein; Slotte, Aril; Dupont, Nicolas; Salvanes, Anne Gro Vea; Korneliussen, Rolf; Huse, Geir (Peer reviewed; Journal article, 2020)The epi- and mesopelagic ecosystems of four sub-polar ocean basins, the Labrador, Irminger, Iceland and Norwegian seas, were surveyed during two legs from Bergen, Norway, to Nuuk, Greenland, and back to Bergen. The survey ... -
Vertical distribution and migration of mesopelagic scatterers in four north Atlantic basins
Klevjer, Thor A.; Melle, Webjørn Raunsgård; Knutsen, Tor; Aksnes, Dag Lorents (Peer reviewed; Journal article, 2020)We studied vertical distribution and diel vertical migration (DVM) behaviour of mesopelagic acoustic scattering layers in relation to environmental conditions in the Norwegian Sea, the Iceland Sea, the Irminger Sea, and ... -
Vertical distribution of fish and krill beneath water of varying optical properties
Kaartvedt, Stein; Melle, Webjørn; Knutsen, Tor; Skjoldal, Hein Rune (Journal article; Peer reviewed, 1996-06-06)The distribution of acoustical scattering layers of fish and krill changed markedly in concert with fluctuating fluorescence (chlorophyll a) in upper waters, possibly due to a varying 'shadow effect'. Beneath clear waters ...